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210= 84/(R1/2+R1/3)

solve for R1

How do I do this

1 answer

210= 84/(R₁/2+R₁/3)
Multiply both sides by the denominator, assuming that R₁ ≠ 0:
210(R₁/2+R₁/3)=84
Now find the common denominator of 2 and 3 to get:
210(3R₁+2R₁)/6 = 84
Multiply both sides by 6/210 and simplify:
5R₁ = 12/5
R₁ = 12/25

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